Shot Calculator

This calculator can be used to calculate the Field Of View of both fisheye and normal lenses and the number of images needed for a panorama using a given overlap. This number is not returned as an integer. This enables you to see if the desired field of view can be reached with less images and a smaller but acceptable overlap.

1. Enter Data: Enter the data of your lens and the size of the image used. This can be film or a CCD. You can use the popup window to enter the values of the most commonly used films, SLR digital cameras and lenses.

2. Calculate Field of View (FOV): Push the first button 'calculate now!' The FOV for both the fisheye and normal lens is calculated.

3. Calculate Panorama: Choose a desired overlap and panorama angle and calculate the number of images needed using the second button.

4. Calculate Overlap: Enter a number of images close to the calculated number and decide if this number will result in an acceptable overlap by pushing the third button. The calculation for fisheye lenses is theoretical. If the image is larger than the image circle of the lens (i.e. circular fisheye) the calculator will not warn you for the fact that the image area will not be covered by the image circle of the lens.

Common Sensor Sizes

1. Enter data
Focal Length mm Sensor length
(above table)
Size utilization % Sensor width
(above table)
  Min. image circle mm  

2 Calculate Field of View (FOV)
For fisheye lens For normal lens
VFOV (portrait) deg VFOV (portrait) deg
  HFOV (portrait) deg HFOV (portrait) deg
FOV min. image circle deg FOV min. image circle deg
3 Calculate Panorama
Overlap in % of FOV % Overlap in % of FOV %
Desired panorama FOV deg Desired panorama FOV deg
  No. of images landscape   No. of images landscape  
No. of images portrait   No. of images portrait  
4 Calculate overlap
Given no. of images   Given no. of images (2nd sample)  
Overlap landscape % Overlap landscape (2nd sample) %


Overlap portrait % Overlap portrait (2nd sample) %
Ideal overlap should be 25-35%
Customized and published by permission © Frank van der Pol

  Panorama Shot Chart